I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
sonly sanely sunnily zonally snail snell snool zonal senile zanily zonula zonule zoonal zonulae
only sonly vainly noily phonily phonal funnily finely inlay bonnily manly loonily moonily nonyl knolly zanily zoonal tinily tonal wanly leanly cannily henley onlay keenly queenly lanely lonely mainly meanly gainly nonoily punily sanely inly rainily sunnily zonal tawnily tinnily unlay shinily